Method of and apparatus for operating suction-actuated devices in connection with the suction passages of internal-combustion engines



April 1, WHO. c. s. BRAGG ET AL 1,753,167

METHOD OF AND APPARATUS FOR OPERATING SUCTION ACTUATED DEVICES INCONNECTION WITH THE SUCTION PASSAGES OF INTERNAL COMBUSTION ENGINESOriginal Filed June 16, 1925 4 Sheets-Sheet l 6/: 26 n a 69 -5/ QQIZIALPINE 1, 39340 c. s. BRAGG ET AL 13,7

METHOD OF AND APPARATUS FOR OPERATING SUCTION ACTUATED DEVICES INCONNECTION WITH THE SUCTION PASSAGES OMBUSTION ENGINES OF INTERNAL COriginal Filed June 16, 1,925

1,753,167 CTUATED AGES 4 Sheets-Sheet 3 V fig b Sum/W50? vgfm FAD(1113mm v.1?

BRAGG ET AL TUS FOR OPERATING SUCTION A CTION WITH THE SUCTION PASS RNALCOMBUSTION ENGINES OF INTE Original Filed June 16 1925 METHODOF ANDAPPARA DEVICES IN CONNE April 1, 1930.

Apn'nfl H, 13. c 5 BRAGG Er AL L753,E67

METHOD OF AND APPARATUS FOR OPERATING SUCTION ACTUATED DEVICES INCONNECTION WITH THE SUCTION PASSAGES OF INTERNAL COMBUSTION ENGINES xOriginal Filed-June 16, 1925 4 Sheets-Sheet 4 Patented Apr, 1, 1930UNITED STATES PATENT OFFICE CALEB S. BRAGG, OF PALM BEACH, FLORIDA,VICTOR W. KLIESRATH, OF PORT WASHINGTON, NEW YORK, ASSIGNORS TOBRAGG-KLIESRATH CORPORATION, OF

LONG ISLAND CITY, NEW YORK, A CORPORATION OF NEW YORK METHOD or ANDnrrmrrrs ron ornna'rme sUormu-AeTUA'rED DEVICES IN con- NECTION WITH THESUCTION PASSAGES or INTERNAL-COMBUSTION ENGINES Application filed June16, 1925, Serial No. 37,407.- Renewed July 13, 1929.

Our invention consists in the novel features hereinafter described,reference being bad to the accompanying drawings, which illustrateseveral embodiments of the same selected by us for purposes ofillustration, and the said invention is fully disclosed in the followingdescription and claims.

In the operation of vacuum brakes or other suction actuated devices inconnection with automotive vehicles, it is extremely convenient toobtain the necessary suction, or partial vacuum, from the suctionpassage of an in- .ternal combustion engine ordinarily employed for thepropulsion of the vehicle, and preferably between the throttle valve forcontrolling the supply ofexplosive mixture, and the cylinder. To thisend it is convenient and desirable to connect such suction actuateddevice with the intake manifold of the engine which forms part of saidsuction passage. It will be understood, further, that the air exhaustedfrom the suction actuating mechanism and delivered into the intakemanifold necessarily has a tendency to reduce the degree of rarificationtherein, and therefore to prevent the drawing in of the proper quantityof liquid fuel from the atomizer,

or to dilute-the explosive mixture passing through the suction passagefrequently to such an extent that the resulting mixture will not readilyignite. In either case the engine, if turning over idly, would be likelyto stall, and the admission of air into the manifold in this manner,would also materially delay the starting of the engine. It is also to beunderstood that for the proper opera tion of the vacuum brake mechanismof a motor vehicle, it is desirable that the air shall be withdrawn fromthe brake actuating mechanism as rapidly as possible, in order to insureinstantaneous operation of the brake mechanism, and that if theconnection between the brake actuating mechanism and the intake manifoldis restricted for the purpose of avoiding the stalling-of the engine anddelay in starting, the result will necessarily retard the operation ofthe brake mechanism to a greater or less extent. It is also to beunderstood that in the operation of vacuum brake mechanism and othersuction actuated devices, the moving part, as the piston, is acted uponby differential pressures brought about by producing a condition ofrarification on one side ofthe piston and admitting a higher pressurefluid, usually atmospheric air, on the other side of the piston, underthe control of a suitable reversing valve mechanism, and that the air soadmitted is subsequently withdrawn and delivered into the suctionpassage of the engine, where the suction is provided by connectionbetween the actuator and the intake manifold.

In our former ap lication for Letters Patent of the United States filedFebruary 26,

1925, and given Serial No. 11,683, we have described a method of andapparatus for operating suction actuated device in connection with thesuction passage of an internal combustion engine, for the purpose ofpreventing the objectionable features above mentioned,

and the stalling of the engine if idling, or otherwise interfering withits operation, by supplying motor fuel to the air which is exhaustedfrom the suction actuated device, be-

fore it reaches the intake manifold, so that when it does enter'themanifold, it will be in the form of an explosive mixture, which willcombine with the explosive charges delivered into the manifold from thecarburetor, and will not have the effect of slowing down or stalling theengine.

Our present invention has for its object to provide an improved devicefor collecting liquid hydrocarbon or motor fuel from the mixture passingthrough the suction passage of the engine and holding it'in a capillaryretaining means, permeable by the air withdrawn from a suction operateddevice (as the power actuator for operating the brake mechanism of anautomotive vehicle) on its way to the intake manifold so that the airwithdrawn from the actuator or other suction actuated device will beforced to pass through said capillary retaining means, and in intimatecontact with finely divided particles of the liquid fuel, so as toinsure the proper carburetion of the air before it reaches the intakemanifold. In some instances we may cause the capillary retaining meansto project into the intake manifold, or into the vertical passagethereto leading from the carburetor, and into the stream of air andliquid hydrocarbon vapor or mist passing therethrough to form theexplosive charges of the engine, so that the said projecting portions ofthe capillary retaining means will collect from the mixture sufiicientliquid hydrocarbon to effect the carburetion of the air withdrawn from asuction actuated device. The capillary retainin means may also besupplied in part with Iiquid fuel from the portion thereof whichcondenses upon the walls of the intake manifold, or the passage from thecarburetor leading thereto. In our preferred construction the capillaryretainmg means is in the form of a coil of wicking, retained in areceptacle interposed in the suction ipe leading from the suctionactuated device to the intake manifold, and portions thereof may extendupwardly into the intake manifold or laterally into the vertical passa efrom the carburetor to the intake mani old, in which latter case thecapillary retaining material is supplied from two sources, and anyexcess of liquid accumulated by the capillary retaining material will bedrained back into the passage from the carburetor to the intake manifoldand restored to the current of mixture.

It will be understood that our invention is no part of the enginecarburetor, which supplies the charges to the engine at all speeds andis responsive to engine conditions, but on the contrary is entirelyindependent of the engine carburetor, and it is operative only inconjunction with an intermittentl operated suction actuated device,connected with the suction passage of the en ine, to permit theintermittent operation 0 the suction actuated device without materiallydiluting the explosive mixture to interfere with the normal operation ofthe engine under the control of the throttlin valve or the stalling ofthe en 'ne when i mg.

n the accompanying drawings,

Fig. 1 is a diagrammatic view showing the installation in an automotivevehicle, comprising an internal combustion engine, brake -mechanism forthe vehicle, and'suction or vacuum actuated mechanism for the automotiveactuator, and having our present invention embodied therein.

Fig. 2 is an-enlarged sectional view of one form of power actuator whichmay be conven- Lentdly employed in an installation of this Fig. 3 is anenlarged view of certain parts illustrated in Fig. 1,. showing theintake manifold and the connection leading from the actuator, and meansfor carbureting the air withdrawn from the actuator.

Fig. 4 is a partial view of the intake manifold and passa e leading fromthe carburetor thereto, s owing a slightly modified form of ourinvention embodied therein.

Fig. 5 is an enlarged detail view of one form of capillary retainingmeans which we may employ, and illustrating a preferred means foradjustably supporting ,a portion therein so 'that it projects into theintake manifold far enough to intercept a stream of explosive mixturetherein.

Fig. 6 is a similar view to Fig. 4, showing another slight modificationof our invention.

Fig. 7 represents a detail view of a manifold and carburetor and showinga modified form of our-improved means for supplying motor fuel to airexhausted from the suction actuated device, interposed in the pipe orpassage connecting the main carburetorwith the intake manifold.

Fig. 8 is a vertical sectional view of the device shown in Fig. 7 andthe adjacent portions of said pipe or passage.

Fig. 8 is an enlarged view of a portion of Fig. 8.

ig. 9 is a view similar to Fig. 8, showing a sli ht modification. I

ig. 9* is an enlarged sectional view of a portion of Fig. 9.

Fig. 10 is a view similar to Fig. 8, showing another slightmodification.

Fig. 11 is a partial horizontal sectional view on the line 1111 of Fig.10.

Fig. 12 represents, partly in section, one method of applying ourinvention to a form of intake pipe connecting the main carburetor withthe intake manifold, and having a heated portion, heated by the gases ofcombustion.

Fig. 13 is a similar view showing another way in which our invention canbe applied to the type of intake passage illustrated in Fig. 12. I

In Fig. 1, we have shown our invention applied in connection with anautomotive -vehicle propelled by an internal combustion engine, andhaving a vacuum or suction operated. actuator for operating the brakemechanism of the vehicle. In this figure, 1, represents the-cylinder ofa power actuator of the kind illustrated, for example, in our formerapplication for Letters Patent of the United States above referred to.The cylinder is provided with a double acting piston, 3, having a hollowpiston rod, 5, connected by link, 73, to a brake lever, 7 2, foroperating the form of brake mechanism diagrammatically indicated in Fig.1, and comprising in this instance a brake band, 71, and brake drum, 70,so that the movement of the piston applies the brakes and in theopposite direction, releases the brakes. The actuator is provided withsuitable reversing valve mechanism, in this instance located in the hubof the piston, and indicated as a whole at 6, the valve mechanism beingoperated by means of a valve ac tuating sleeve, indicated at 20,connected by a suitable link with the usual brake operating lever, 74,provided with a retracting spring, 75. As the specific form of valvemechanism has no bearing on our present invention, it

will not be described in detail. 26 represents 'a suction pipe having aflexible portion,

by means of suitable ports .controlled by the reversing valve mechanism.The piston hub is also provide-d with aninlet chamber, 18, for higherpressure fluid, as atmospheric air,

which chamber is in communication through.

the sleeve, 20,and hollow piston rod, with an inlet aperture, 5*, formedin the latter. The valve sleeve, 20, is provided with a plug orpartition, indicated at 21, separating the air inlet passage to thechamber, 18, from the suction passagetto the suction chamber, 17. Itwill be understood that in the operation-of the actuator, a forwardmovement of the sleeve, 20, in the direction of the arrow in Fig. 2,will admit air into the cylinder in rear of the piston, the forwardportion of the 7 cylinder being connected with the intake manifold bythe suction pipe, 26, therebycausing the forward movement of the piston,

while the movement of the sleeve, 20, inthe opposite direction, willreverse the connections with the cylinder, withdrawing the airpreviously admitted in rear of the piston, from the suctionchamber,,17,.and suction pipe, 26, and delivering it into the manifold,air at atmospheric pressure being admitted to the cylinder forward ofthe piston, and

thus effecting its return movement.

In carrying out our present invention, we interpose between the suctionpipe, 26, and the intake manifold of the engine, aca illary retainingmeans for holding liquid uel obtained from the manifold, in finelydivided condition, and in such manner that the air.-

drawn from the actuator must pass throu b said capillary retainingmeans, and in irect contact with the liquid fuel, so as to take up theliquid fuel and form an explosive mixture before the air enters themanifold. We prefer to provide, adjacent to the manifold, a' metallicrecelptacle, 61, to which the pipe, 26, is connece the said receptaclebeing connected to the manifold by the pipe, 61. "Within the receptacle,61, which, for convenience of reference, we may designate a trap, weprovide the capillary retaining means, which may consist of any suitablematerial capable of holding liquid hydrocarbon in capillary intersticesin the same, or between portions of the same. For example, we may employfibrous material, fine wires, asbe'stos'wool, or the like, which will,retain the liquid fuel in its interstices and substan tially fill thetrap, or receptacle, 61, so that the air in passing from the pipe,26,-into the manifold, must passthrough the capillary retaining means, andin intimate contact with the liquid fuel. We prefer to employ,

- as a matter of convenience, an absorbent material such as loosewicking, indicated at 61, which may be conveniently arranged incoilswithin the trap or receptacle, 61, so as to hold the liquid fuel andforce the air to pass through it. The trap may be supplied with liquidfuel by means of the pipe, 61", as a certain amount of the liquid fueltaken from the carburetor is deposited upon the walls of the intakemanifold, and tends to trickle back toward the entering stream ofmixture. A certain amount of it would flow through the pipe, 61", intothe receptacle, 61, and be absorbed by the capillary retaining meanstherein, when the actuator was not in use.

We prefer, however, to provide the receptacle, or trap, 61*, with anadditional pipe, 61 connecting it with the manifold, and containingportions of the capillary retaining means, which are projected inwardlyinto the manifold far enough to be in the stream of explosive mixturepassing therethrough, so that portions of the liquid fuel will be caughtand retained by the capillary retaining means and conducted into thebody of the larger capillary retaining means'within the receptacle, 61,to insure a supply of liquidfuel therein at all times, in addition tothat whichmay flow into the receptacle, 61,

through the pipe, 61*, or independently thereof, as preferred. We preferto provide the inner end of the pipe, 61 within the intake manifold,with fine perforations, as indicated at 61", in Figs. 3, and 5, or theupper end of this pipe may be formed of wire gauze, or the upperperforated end. of the pipe, 61, may be omitted and the capillaryretaining medium, if it possesses sufliclent' stiffness, maybe projectedbeyond the open end of the pipe, 61, and into the stream of combustible'mixture,'to abstract the necessary amounts of liquid fuel'therefrom, if

referred. We also prefer to provide means or'adjusting the pipe, 61,longitudinally so as to cause it to project more or less into the intakemanifold, so as to collect more or less of the liquid fuel from themixture passing therethrough. To this end the pipe, 61, may beadjustably connected with the receptacle, 61, as by means of theconstruction illustrated in Fig. 5, and may also be. connected in likemanner'with the intake manifold. For this purpose, we convenientlyemploy a compression connection, consisting, as shown in' Fi 5, of acollar, 35, externally screw threa ed, for engaging a threaded aperturein the part with which it is connected, and provided internally with atapered portion, indicated at 36, and threaded portions,-indicated at37. In connection with this collar, we use a compressible collar,indicated at 38, having a threaded portion, 39, for engaging thethreaded portion, 37, of the collar, and tapered portions terminating inan annular compressible portion, 40, adapted to be forced inwardly whenthe compression col-- lar, 38, is screwed home, within the collar, 35.The pipe, 61 is preferably made of thin brass or othersuitable metal andpasses through the central openings of the collars, and 38, and when thecompression collar, 38, is screwed up tight, the portion, 40, thereofwill rigidly clamp and slightly indent the tube or pipe, 61, therebyholding it in any position to which it may be adjusted longitudinally,and also compressing the wicking or other capillary retaining materialenclosed therein. It will, therefore, be seen that .by adjusting thetube, 61, inwardly to a greater or less extent with respect to theintake manifold, and also by'eifecting a greater. or less lateralcompression of the pipe or tube, 61 and the capillary retaining themanifold, 161*, the receptacle or trap,

connected to the manifold by the pipe, 161,.

and to which the suction pipe, 126, from the actuator is connected. Thereceptacle or trap. 161, is provided with a pipe, 161, connecting itwith the manifold and extending into the manifold, and provided withperforations, 161", the said pipe and the receptacle, 161*, being filledwitlr the capillary retaining medium, in this instance, the wickingindicated at 161, in the manner previously described. In this instance,however,

we have provided the lower end of the receptacle, 161, with a secondpipe, indicated at 161 extending through the vertical wall of thepassage of the carburetor. and provided within said passage, withperforations,

161, said pipe being filled with a continuation of the wicking or othercapillary retaining medium. By means of this construction, the capillarymaterial will be supplied with liquid fuel from both of the projectingportions, 161 and 161, of the tubes, 161 and 161 and in case of anexcess of liquid fuel being collected within the receptacle, 161, beyondthe capacity of the capillary retaining material to hold the same, suchexcess oil will automatically drain into the vertical passage connectingthe manifold with the carburetor, as will be readily seen, so that thisconstruction provides two sources for supplying the capillary retainingmaterial with liquid fuel, and at the same time, a means forautomatically preventing an over supply of the same. It will be seenthat the air withdrawn from the actuator through the pipe, 126, will beforced to pass through the capillary-retaining means. and in intimaterelation with the liquid fuel on its way to the carburetor, into. whichit is dischargedsuction operated device, which is also connected to thereceptacle 261. .Within the receptacle, 261. is provided the capillaryretaining medium, in this instance, a wicking, 261, formed of fine wire,although it may be of any other suitable material, as hereinbeforestated, and we prefer that the wicking should project through the tube,261 into the intake manifold, as indicated at 261, so as to collectliquid fuel from the stream of charge forming mixture passing from theintake manifold, and also to collect liquid fuel deposited in theadjacent part of the intake manifold, which may flow into the pipe,261". so that the wicking, 261, will be supplied with liquid fuel. Inthis instance we have also shown the receptacle, 261, formed in twoparts connected in any suitable manner and provided with an inner wallof permeable material, indicated at 262, for example, such innerreceptacle may be formed of compressed chamois skin, in a well knownman-. ner, and encloses the wicking, 261, leaving an air passage,indicated at 263. surrounding the inner permeable wall. The receptacleis also shown with an inwardly extending annular flange indicated at264, and provided with apertures, 265, therein, for assisting insustaining the chamois or other permeable wall in position. This innerwall might be formed of wire gauze, or other foraminous material, ifdesired, and may be held in place in any desired manner. The suctionpipe, 226, is connected to the receptacle, 261*, so that the enteringair from the suction actuated device, will be admitted to the spacebetween the inner and outer walls, and will be forced to pass throughthe permeable inner wall, 262, and through the interstices of thewicking in order to reach the intake manifold. As there is only one pipeconnection beconvenient form of a ring, which can be inpassage valve,indicated at 369. The inner face of serted in the pipe or passageconnecting the main carburetorwith the intake manifold. In these.figures, 361, represents the intake manifold connected to the maincarburetor, 366, "of any usual or preferred iorm, by a vertical pipe,preferably formedin two parts, 366 and; 366", between which is located aring, 381, provided with an annular, channel, 381, provided with anannular-channel, 382, open at the. inner face of the ring, exterior towhich channelis a second annular channel cored in the ring and indicatedat 383, whichlcommunicates with the first mentioned channel at intervalsby air apertures,

384. The section, 366, of the vertical pipe or isv provided with theusual throttle the ring above and below the annular channel, 382, isprovided with grooved portions,

indicated at 385, and we prefer to-cover the inner face of this ringwith a wicking of fibrous absorbent material, usually permeated by air,as for example, a woven fabric of asbestos or other suitable material,indicated at 386 In order to hold this fibrous material in position,andalso to prevent any of the "particles or loose fibres thereof frompassing to the engine, we prefer to place over the fibrous .absorbentmaterial, an annular piece of wire-gauze, indicated at 387, said gauzeand fibrous material being held in position by spring rings, 388, whichpress the same into the annular grooves. 385. The ring is provided-witha nipple, 389, to which the suction pipe, 326, preferably a flexiblepipe'of rubber or other suitable material, is con.-

. nected, saidnipple communicating with the exterior annular recess,383, v This ring, 381 can be readily inserted between the sect-ionsfofthe intake pipe leading to the manifold and secured in position by meansof suitable; bolts or'screws, as indicated at 390, in 'IFig: 7, passingthrough lugs or ears,

formedon said pipe sections, and the ring, 381, and. provided withregistering apertures. Theannular channel, 382,'is preferably pro.-vided witha depressed portion, indicated at 39l, j;below the lower lip,391", of the ring, whichsformslf an annular reservoir for thecollect-ion and retention of liquid motor fuel, andq've prefer; toprovide the fibrous absortient measures, with capillary tails,

indicated at 392, which may be threads drawn out of the material .orstitched into the same,

of the ring.-

or any other form of capillary appendages may e voir, 391, formed in thering.

It will be understood that in this of our invention, the same operationtakes place as that previously described. The absorbent 5 j 9 material,386, will receive and absorb liquid.

motor fuel from the mixture passing upward from the'main carburetor tothe manifold, or which may be deposited on the wallsof the verticalpassage and trickle downward along 1 the walls thereof. Any excessliquid received 7 l by the absorbent material will be conducted by theabsorbent tails, 392, to and be retained in the reservoir or pocket,391, formed in the ring, and by means of these absorbent tails,

there will be a more or .less constant transfer of motor fuel from thesaid reservoir to the absorbent material, and woe versa, so.

as to maintain the absorbent material, 386,

at all times in a moist condition. W hen the brake mechanism orothervacuum actuated mechanism is operated so as to withdraw air fromthe actuator and deliver it into the annular passage, 383, on its way tothe manifold, such air will be distributed through the passages, 384, tothe channel, 382, of the ring, and will thence pass through thecapillary or absorbent material, 386, before it enters the verticalpassage connecting the main carburetor to the manifold, which insuresthe proper mixture of motor fuel with said air, to form a combustiblemixture which mixes with the charge forming mixture passing from thecarburetor in the manner previousthe channel, 482, is carried inwardlyto roduce an annular flange, 485, which pro ects into the verticalpassages, so as to deflect portions of the charge forming mixture drawnupward from the main carburetor, into the interiorchannel, 482, to causeit to deposit a portion of its liquid fuel, and said channel, isprovided with absorbent material to retain the same, which may be inthis instance conveniently provided in the form of a rin 386, ofasbestos or other absorbent materia protected by an exterior coating ofwire' gauze, 387, and conveniently provided with an interior stiffeningwire, 388, saidring being sufliciently flexible to be strung into itsplace in thechannel, 482. The ring 18 provided with the nipple, 489,connected with the suction pipe, 426, and the operation of the device ispractically as that described. It will be seen that the air enteringfrom the suction pipe, 426, will be distributed through the smallapertures, 484, into the inner channel, 482, directly in contact withthe moist capillary material supported therein. The lower portion of thechannel, 482, also forms a reservoir, indicated at 491, the inner loweredge of said channel being provided with an upwardly extending lip, 491,as shown.

In Figs. 10 and 11 we have shown another slight modification of the ringand the capillary material carried thereby. In this instance thesections of the vertical passage are indicated at 566 and 566*, and thering itself is indicated at 581, being conveniently formed in twosections for convenience of manufacture. 582 represents the innerchannel, and 583, the exterior channel, communieating with the innerchannel by apertures, 584, which are located adjacent to the bottom ofthe channel, 582, and said channel is provided with a lip, 591?, at itslower edge, forming a liquid reservoir, 591, and with a downwardlyextending lip, 585, at itsupper edge. Within the channel is provided anannular ring, 586, of capillary material, such as an absorbent mass offibrous material pressed into form, for example, asbestos, and which maybe protected by a covering of wire gauze or other material as desired,the said ring being provided on its inner edge with radially disposedprojections, or tongues, 586*, which project over the lip, 591, towardthe interior of the vertical passage from the main carburetor. In thisinstance the inwardly projecting tongues, or fingers, 586, thus serve tocollect liquid motor fuel from the charge forming mixture passingupwardly from the main carburetor, and by capillary action, transmittedto the main body of the ring, 586, and to the reservoir, 591, in themanner hereinbefore described, the said ring being provided withdepending portions, 586*, or capillary tails to insure the transfer ofliquid to and through said reservoir. The air entering from the suctionactuated device through the pipe, 526, passes through the smallapertures, 584, into said reservoir, 591, and through the absorbentmaterial of the ring, 586, becoming admixed with motor fuel and enteringthe passage, as explosive mix ture to be mixed with the charge formingmixture, as hereinbefore described.

In some of the carburetors now in use the passage connecting the maincarburetor with the intake manifold is provided with a pocket havingheating means of some kind into which the mixture is deflected for thepurpose of more perfectly vaporizing the liquid motor fuel and insuringa dry mixture reaching the cylinders from the engine. Our invention isequally applicable to this type of carburetor and we have shown in Figs.12 and 18, two forms in which our invention may be perpocket.

fectly applied thereto. Referring to Fig. 12, 661, represents the intakemanifold connected to the main carburetor by the vertical passage, 666*,which is provided with a pocket or recess, 666, having a heating jacket,666 through which heated products of combustion are passed, the saidpassage being also provided with a deflector, 666 for deflecting thecharge forming mixture into said heating In this instance we have showna mass of fibrous capillary material indicated at 686, preferablysurrounded by a protecting layer of wire gauze, 687, and located in thebottom of the heating pocket, 666, and connected with the suction pipe,626, which is passed through the heating jacket and discharges the airwithdrawn from the suction actuated device through the absorbentmaterial, 686. This absorbent or capillary material will take up acertain amount of the liquid fuel from the mixture and give it off tothe air admitted through the vacuum or suction pipe, 626, beforepermitting it to pass into the passage, 666", on its way to the manifoldand .the operation of the device is substantially as before described.

In Fig. 13, the manifold is indicated at 761,the heating pocket, 766,the passage at 7 66 and the heating jacket for the heating pocket isindicated at 766 In this instance we have shown a mass of capillary orfibrous absorbent material at 786, protected by a covering of wiregauze, 787, and supported at the other side of the pocket and connectedwith the suction pipe, 726, leading from the vacuum actuated device andpassing through the heating jacket, 766". The operation of the device isexactly the same as that previously described.

It will be understood that in all of the forms of our invention, weprefer to connect the suction pipe to the suction passage of the enginebetween the throttle valve and the cylinders.

The specific forms of our invention illustrated in Figs. 7, 8, 8*, 9, 910 and 11 are not specifically claimed herein, as they form the subjectmatter of a divisional application for Letters Patent of theUnited'States filed September 18, 1926 and given Serial No. 136,226.

While we have herein shown the actuator connected with brake mechanismof an automotive vehicle, it is obvious that it might be employed tooperate other devices which are intermittently operated, as for example,the door mechanisms of busses and other vehicles, which are alsointermittently operated.

. What we claim and desire to secure by Letters Patent is 1. Thecombination with an internal combustion engine. provided with a suctionpassage communicating with the engine cylinder, or cylinders, acarburetor connected thereto for supplying the normal charges for theengine cylinders at all speeds, a throttle valve forcontrolling saidpassage, a suction actuated device, and a suction pipe connecting itwith said passage, of a receptacle interposed between said suction pipeand the said suction passage, and a capillary medium within saidreceptacle for holding said liquid fuel collected from said suctionpassage,

' and effecting the carburetion of the air withinterference with theoperation of the engine drawn from thesuction actuated device before itreaches the suction passage to prevent passage, adjacent to thecarburetor, for collecting liquid fuel from the charge forming mixtureand automatically draining said receptacle of excess liquid fuel socollected thereby in excess of its ability to holdthe same.

2. The combination with an internal combustion engine provided with anintake manifold having a passage leading to the carburetor, a carburetoroperatively connected with said passage for supplying the normal chargesfor the engine cylinders at all speeds, a throttle valve for saidpassage, and .asuc tion operateddevice, of a receptacle having an airconnection with the manifold extending from the said receptacle andprojecting into said manifold, and provided with perforated portionswithin the manifold in the path of the normal charges passingtherethrough, a capillary retaining medium within said receptacle havingportions extending through said collecting pipe into the manifold, and asuction pipe connecting said receptacle with the suction operateddevice.

3. The combination with an internal combustion engine provided with anintake manifold having a passage leading to the carburetor, a carburetoroperatively connected with said passage for supplying the-normal chargesfor the engine 0 linders atall speeds,

a throttle valve for sai passage, and asuction operated device, of areceptacle having an air connection with the manifold and extending fromthe said receptacle and projecting into said manifold, and provided withperforated portions in the path of the normal charges passingtherethrough and a liquid collecting and draining pipe extending fromthe lower portion of said receptacle-into the vertical passageconnecting the carburetor with the manifold and projecting. into saidpassage and provided with perforated portions therein in the path of thenormal charges passing therethrough, a capillary retaining medium Withinsaid receptacle having portions extending through said liquid coliecting pipes into said manifold within the perforated portions of saidpipes, and vertical passage respectively, and a suction pipe connectingsaid receptacle with the suction actuated device.

4. The combination with an internal'combustion engine provided with asuction passage communicating with the engine cylinder or cylinders, andwith a carburetor, for supplying the normal explosive charges to theengine at all speeds, and a throttle valve for controlling said passage,an intermittently o'peratedsuction actuated device, and a suction pipeconnectin the suction actuated device and said suction passage betweenthe throttle valve and the engine cylinder, .or cylinders, of acapillary medium for collecting liquid fuel from the normal chargeforming'mixture passing through said suction passage, and means forpassing the air with drawn from the suction actuated device in intimaterelation to said capillary retaining medium and the liquid fuel heldtherebyto fuelize said air before it enters said suction passage, andprevent interference with the operation of the engine and stalling it ifidling, by the operation of the suction actuated device.

5. The combination with an internal con bustion engine provided witha'suction passage communicating with the engine cylinder or cylinders,and with a carburetor, for supplying the normal explosive charges to theengine at all speeds, and a throttle valve for controlling said passage,an intermittently operated suction actuated device, and a suction pipeconnecting the suction actuated device and said suction passagebetweenthe throttle valve and the engine cylinder, or

cylinders, of means for'collecting excess liquid fuel from the. normalcharge forming mixture passing through said suction passage, interposedin the suction connection between the suction actuated device and thesuction passage, to fuelizethe air.- withdrawn from the suction actuateddevice before it enters the suction passage, and preventing interferencewith the operation of the engine and stalling it if idling, by theoperation of the suction actuated device, and means for automaticallyreturning excess liquid fuel so collected beyond the capacity of thecollecting means, to the stream of normal charge forming mixturepassing. through said suction passage.

i 6. The combination with an internal com-' bustion engine, providedwith a suction passage communicating with the engine cylinder 0rcylinders, a carburetor connected thereto, for supplying the normalcharges to the engine at all speeds, a throttle valve for controllingsaid passage, a suction actuated device comprising a cylinder and apiston connected to a part to be intermittently operated, and a suctionpipe connecting itwith said passage, of a receptacle interposed betweensaid suction pipe and the said suction passage, and a capillary mediumin the path of the air withdrawn from the suction actuated devicelocated within said receptacle, for holding liquid fuel collected fromsaid suction passage, to fuelize said air before it reaches the suctionpassage, to prevent interference with the operation of the engine orstalling it if idling, by the operation of the suction actuated device,said capillary medium having portions extending into said suctionpassage and projecting into the stream of charge forming mixture passingtherethrough, to facilitate the collection of liquid fuel from saidsuction passage.

7. The combination with an internal combustion engine provided with asuction passage communicating with the engine cylinder or cylinders, acarburetor connected thereto, for supplying the normal charges to theengine at all speeds, a throttle valve for controlling said passage, asuction actuated device comprising a cylinder and a piston connected toa part to be intermittently operated, and a suction pipe connecting itwith said passage, of a receptacle interposed between said suction pipeand the said suction passage, and a capillary medium in the path of theair Withdrawn from the suction actuated device located Within saidreceptacle. for holding liquid fuel collected from said suction passage,to fuelize said air before it reaches the suction passage, to preventinterference with the operation of the engine or stalling it if idling,by the operation of the suction actuated device, said capillary mediumhaving portions extending into said suction passage and projecting intothe stream of charge forming mixture passing therethrough, to facilitatethe collection of liquid fuel from said suction passage, and means foradjusting the extent to which said capillary medium projects into saidsuction passage to regulate the collection of liquid fuel therefrom 8.In brake mechanism for automotive vehicles provided with an internalcombustion engine having a suction passage communicating with the enginecylinder or cylinders, and a carburetor connected therewith forsupplying the normal charges to the engine at all speeds, and a throttlevalve for controlling said passages, the combination with a suctionactuated device comprising a cylinder and a piston therein operativelyconnected with brake mechanism of the vehicle. a suction pipe forconnecting the suction actuated device with said suction passage, andcontrolling valve mechanism for the suction actuated device. of areceptacle interposed between said suction pipe and the said suctionpassage, and a capillary medium in the, path of the air intermittentlywithdrawn from the suction actuated device locatedwithin said receptaclefor holding liquid fuel collected from said suction passage to fuelizesaid air before it reaches the suction passage to prevent interferencewith the operation of the engine or stalling it if idling by theoperation of the suction actuated device, said capillary medium havingportions extending into said suction passage and projecting into thestream of normal charge forming mixture passing therethrough, tofacilitate the collection of liquid fuel from said suction passage.

9. In brake mechanism for automotive vehicles provided with an internalcombustion engine-having a suction passage communicating with the enginecylinder or cylinders, and a carburetor connected there-' with forsupplying the normal charges to the engine at all speeds, and a throttlevalve for controlling said-passages, the combination with a suctionactuated device comprising a cylinder and a piston therein operativelyconnected with brake mechanism of the vehicle, a suction pipe forconnecting the suction actuated device with said suction passage, andcontrolling valve mechanism for the suction actuated device, of areceptacle interposed between said suction pipe and the said suctionpassage, and a capillary medium in the path of the air intermittentlywithdrawn from the suction actuated device located within saidreceptacle for holding liquid fuel collected from said suction passageto fuelize said air before it reaches the suction passage to preventinterference with the operation of the engine or stalling it if idlingby the operation of the suction actuated device, said capillary mediumhaving portions extending into said suction passage and projecting intothe stream of normal charge forming mixture passing therethrough, tofacilitate the collection of liquid fuel from said suction passage, andmeans for adjusting the extent to which said capillary medium projectsinto said suction passage to regulate the'collection of liquid fueltherefrom.

10. The method of operating a suction actuated device deriving itssuction from an internal combustion engine, which consists inwithdrawing excess liquid fuel from the normal explosive chargesdelivered to said engine and conveying said excess liquid fuel bycapillary action into the path of air withdrawn from the suctionactuated device, to carburet said air, and then combine it with thenormal explosive charges to prevent stalling or otherwise interferingwith the operation of the engine when the suction actuated device isoperated.

11. The method of operating a suction actuated device deriving itssuction from an internal combustion engine, which consists inwithdrawing excess liquid fuel from the normal explosive chargesdelivered to said engine, conveying said excess liquid fuel by acapillary action into the path of the air withdrawn from the suctionactuated device, to carburet said air, and combine the same with thenormal explosive charges to prevent 5 stallin or otherwise interferingwith the operation of the engine when the suction actuated device isoperated, and returning all excess fuel unvaporized by air from theactu- 4 ator into the normal charge forming mixture. 10 12. The methodof operating a suction actuated device deriving its suction fromaninternal combustion engine, which consists in removing from the normalexplosive charges excess liquid fuel, presenting said excess liquid fuelto the action of the air withdrawn from the suction actuated device tocarburet said .air, and then combining saidcarbureted air with thenormal explosive charges to prevent interference with the engine whenthe suction actuated device is operated.

In testimony whereof we aflix our signs. tures.

CALEB S. BRAGG. VICTOR W. KLIESRATH.

